Broke it already

My server has been knocked offline after an attempt to configure Sun xVM VirtualBox so that it can be part of my normal network. I ignored the "only do this remotely if you know what you're doing" warning only to find myself unable to even ping the box 5 minutes later. I'm left without a toy until I can get home and reboot it and/or hook up a keyboard, mouse, and monitor to it to undo what I did.